dc.contributor.author | Ona, Egil | |
dc.contributor.author | Godø, Olav Rune | |
dc.date.accessioned | 2009-01-22T14:47:14Z | |
dc.date.issued | 1990 | |
dc.identifier.issn | 0074-4336 | |
dc.identifier.uri | http://hdl.handle.net/11250/116852 | |
dc.description | Int. Symp. on Fisheries Acoustics, Seattle, WA (USA), 22-26 Jun 1987 | en |
dc.description.abstract | The reactions of fish during trawling were observed with a stationary echo sounder as a trawling vessel passed close to the transducer. Several strong, downward avoidance reactions of haddock (Melanogrammus aeglefinus ) were recorded. At depths greater than 100 m, however, the reaction pattern was weak and irregular. A comparative analysis of echo-integrator data at random bottom-trawl sampling sites indicates that fish avoidance occurs between the surface and 200-m depth, even before the vessel arrives. At greater depths, such pre-vessel avoidance reactions are not significant. | en |
dc.format.extent | 1230337 bytes | |
dc.format.mimetype | application/pdf | |
dc.language.iso | eng | en |
dc.publisher | ICES | en |
dc.title | Fish reaction to trawling noise: The significance for trawl sampling | en |
dc.type | Conference object | en |
dc.source.pagenumber | 159-166 | en |
dc.source.volume | 189 | en |
dc.source.journal | Rapports et Procès-Verbaux des Réunions | en |